ABACUS-TUTORIALS AND EXERCISES

The abacus is a counting frame used during the medieval ages before the formal system

of calculations using Hindu and Arabic numerals were introduced.

Using the Abacus one can perform addition, subtraction, multiplication, division,

one can find the LCM and HCF of two numbers ,Find Square roots and perform a few other arithmetic operations.

This app supports Learning the ABACUS using Arithmetic operations. .

The APP will simulate a real world Abacus. This android app supports a graphics based Abacus tool. The user can also use a real Abacus in addition to the graphical tool enabled in the app to understand the tutorials/examples.

Tutorials are separated into Beads and Numbers, Simple Addition, Addition using complements Subtraction and Simple Multiplication

In "Beads and Numbers" The graphics based abacus tool will show the numbers when beads are moved alternately show the bead positions when numbers are set.

The Simple Additions are additions simulated without complements.

The Additions using complements are categorized into complements of each digit from 1 to 9 with respect to 10 and complements of digits from 1 to 5 with respect to 5. In both the cases, the problem set will be automatically generated. The solution steps are also automatically generated and can be viewed using forward and back tabs. During each step the instructions for the user to perform on the Abacus can be viewed below the Abacus frame where the number operations are done. Arrow marks on the Abacus frame during the transitions of the frame show the steps to solve the problem presented. Any number of problems can be generated using the reset icon. On pressing the reset icon a new problem set will be generated and shown to the user.

The app also supports tutorials on Simple Multiplication and Subtraction.

Each of the tutorials above can be generated/viewed for input numbers sizes ranging from 1 to 4 digits.

In the General Exercises section a problem which is generated automatically is presented to the user. The user can solve it using the Abacus frame shown above the problem by moving the beads one at a time. If a user wishes to move 3 beads to add the value of 3 he has to move 3 beads one at a time.

If the user solves it correctly it will be reported as 'Good Job" else it will be reported as "Wrong Answer try again".

The app does not require an Internet connection. Once downloaded it can be used any time.

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算盘是在正式制度之前的中世纪使用的计数框架

介绍了使用印度教和阿拉伯数字进行的计算。

使用算盘可以执行加法，减法，乘法，除法，

可以找到两个数字的LCM和HCF，找到平方根并执行其他一些算术运算。

这个程序支持使用算术运算学习ABACUS。 。

该APP将模拟真实世界的算盘。此android应用支持基于图形的Abacus工具。除了在应用程序中启用的图形工具之外，用户还可以使用真实的Abacus来了解教程/示例。

教程分为小珠和数字，简单加法，使用补码的加法减法和简单乘法

在“珠子和数字”中，基于图形的算盘工具将在交替移动珠子时显示数字，在设置数字时显示珠子位置。

简单加法是模拟的没有补码的加法。

使用补码的加法分类为相对于10的每个数字从1到9的补码和相对于5的1到5的每个数字的补码。在这两种情况下，都会自动生成问题集。解决方案步骤也会自动生成，并且可以使用前进和后退选项卡进行查看。在每个步骤中，可以在完成数字操作的算盘框下方查看用户在算盘上执行的指令。在框架转换过程中，算盘框架上的箭头标记显示了解决所提出问题的步骤。使用重置图标可以产生许多问题。按下重置图标后，将生成一个新的问题集并显示给用户。

该应用程序还支持有关简单乘法和减法的教程。

上面的每个教程都可以生成/查看，输入数字的大小范围是1到4位。

在“一般练习”部分中，会自动向用户显示一个问题。用户可以通过一次移动一个珠子，使用问题上方的算盘解决该问题。如果用户希望移动3个小珠以增加3的值，则他必须一次移动3个小珠。

如果用户正确解决了该问题，它将报告为“好工作”，否则将报告为“错误答案，请重试”。

该应用程序不需要Internet连接。下载后即可随时使用。

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